package chapter04.demo003;

/**
 * 抽象类
 */
 abstract class Student{
    int id;
    String name;
    abstract  void setId(int id);
//    abstract int getId();
//    abstract void setName(String name);
//    abstract String getName();
    public void study(){
        System.out.println("我的天职是学习");
    }
}
//1.抽象类可以直接继承抽象类
abstract class SmallStudent extends  Student{}
//2.普通类继承抽象类
class SeniorStudent extends Student{
     void setId(int id) {
         this.id = id;
     }
}
public class Demo003 {
    public static  void main(String[] args) {
        SeniorStudent stu1 = new SeniorStudent();
        stu1.id = 1;
        stu1.name = "小明";
        stu1.study();
    }
}
